Hi Fabien, I know it took a while but I've some time to see what's going on.
Another interesting possibility is: typedef kth_channel_view_type< 0, const rgb8_view_t> KthChannelView; typename KthChannelView::type first = KthChannelView::make( const_view(img) );
This doesn't compile on my machine. VC10 is the compiler I'm using. Stripping the const's helps me: typedef kth_channel_view_type< 0, rgb8_view_t> KthChannelView; KthChannelView::type first = KthChannelView::make( view( img ) ); Does it work on your machine?
It can be a good thing to directly use channel type, like this: typedef channel_view_type< red_t, const rgb8_view_t>::type view_t; view_t first = channel_view<red_t>( const_view( img ));
Same here. This works: typedef channel_view_type< red_t, rgb8_view_t>::type view_t; view_t first_ = channel_view< red_t >( view( img ));
I have written some code to do that, based on kth_channel_view_type. It's maybe intersting to include in gil.
Thanks! I have added this code to the toolbox extension. See here: http://code.google.com/p/gil-contributions/source/browse/trunk/gil_2/boost/g... Regards, Christian